Waste conveyors



' WASTE coNvEYoRs Filed July 1'7, 1961 United States Patent O 3,112,025 WASTE CNVEYRS Lucien Pras, Eiliancourt, France, assigner to Regie Nationale des Usines Renaut, Billancourt, France Filed .hilly 17, 1961, Ser. No. 125,057 Claims priority, application France .luly 22, 1%() 1 Claim. (Cl. 11198-174) This invention relates to waste conveyor apparatus, that is, apparatus for collecting chips, borings, turnings and like cuttings from machine tools, and its specilic object is to improve apparatus of this character with a View to increase their efliciency.

ln hitherto known `apparatus of this type a conveyor chain carrying waste driving members is reciprocated in a col-lector channel. This chain consists generally of a tube carrying the driving members which is guided on a solid or tubular core.

The improvements according to this invention consist essential-ly in substituting an angle iron for the tube guided on a core, the vertex of this angle iron being directed upwards and having welded thereon fthe vertical spurs or like elements and V-shaped members commonly used lin apparatus of this type for carrying along the chips. Suitably spaced rollers carried by the bottom of the collector channel support the angle iron and constitu-te a slideway.

This embodiment of conveyor, characterized by its simplicity, has in particular the following advantages and use:

Very moderate wear of movable parts;

Extremely satisfactory tightness of these parts; and

The minute waste cannot interfere with fthe proper operation of the apparatus.

Referring to the attached drawing illustrating a typical embodiment of the improved waste conveyor of -this invention:

`FGURE 1 is an elevational view of one fragment of the apparatus;

FIGURE 2 is a plane view from above of the same fragment, and

FIGURE 3 is a cross-section taken on a larger scale.

The structure shown notably -in IFIGS. 1 and 2 of the drawing comprises a reciprocating chain consisting essentially of one or a plurality of angle irons :1 suitably interconnected and so directed that the bisectrix of the angle formed by their wings extends vertically, the angle irons being disposed in .the waste collecting channel (not shown) so as to straddle the slideway carried by Ithe bottom of this channel and constituted by suitably spaced rollers 2.

ln FG. 2 it will be seen that these rollers 2f, in the specic form of embodiment shown by way of example, are each mounted in a supporting case 3 on a pin 4 through the medium of ball-bearing 5. From FIG. 3 it will also be seen that the outer periphery of each roller is suitably shaped to conform to 'the inner contour of the bottom of the angle irons, between the wings thereof. The waste driving members, consisting in the usual manner of V-shaped members 6 associated with vertical spurs 7, are secured at proper longitudinal intervals on the angle irons v1, preferably by welding.

Gf course, various modifications may be brought to the embodiment shown and described herein, without however departing from the spirit and scope of the invention as set forth in the appended claim.

I claim:

In a collector channel for waste scrap, a scrap conveyor chain consisting of a plurality of connected angle iron members opening downwardly and with their vertexes extending upwardly and their two sides extending downwardly and outwardly, transversely extending scrap drive push members consisting of V-shaped elements sloped rearwardly of the angle iron members and secured to said sides, and guide members in said collector channel comprising a plurality of laterally spaced aligned vertical rollers with a peripheral profiile corresponding to the prole `of the inner corner of said vertexes, said angle iron members being disposed with the surface of said inner corner in contact with the peripheral prole of said Vertical rollers whereby scrap is driven by said conveyor without scrap wedging between said angle iron members and rollers.

References Cited in the file of this patent UNITED STATES PATENTS 764,246 Levalley July 5, 1904 2,432,852 Arvidson Dec. 1,6, 1947 FOREIGN PATENTS 867,935 Germany Nov. 5, 1953 428,085 Great Bri-tain May 7, 1935 

